Tropical Storm Irma is now a hurricane in the open Atlantic and is expected to strengthen into a category 4 storm as it treks west.

As of Thursday afternoon, Irma was upgraded to a category 3 storm packing sustained winds of 115 mph and was located more than 3,000 miles away from Florida, becoming the second major hurricane of the season. The storm is headed west toward the Leeward Islands.

U.S. and European computer models show Irma heading in different directions.

"The American models take it to the Carolinas by next Sunday (Sept. 10). The European models have it going to Cuba and possibly threatening South Florida," News 6 meteorologist Troy Bridges said. "It's just too early to tell."